Finding the Fourth Proportional to 16,736.69, 25,117.17 and 13,488.99

Step by Step Solution

1. Step 1: Write the proportion equation
   16,736.69 : 25,117.17 = 13,488.99 : x
2. Step 2: Convert to fraction form
   16,736.69/25,117.17 = 13,488.99/x
3. Step 3: Cross multiply
   16,736.69x = 25,117.17 × 13,488.99
4. Step 4: Simplify right side
   16,736.69x = 338,805,254.96
5. Step 5: Solve for x
   x = 338,805,254.96/16,736.69
6. Step 6: Final answer
   x = 20,243.27